Choosing a new pool heater means weighing upfront cost against ongoing operating cost, and the right answer depends heavily on how often you plan to use a heated pool. Here is how gas, electric resistance, and heat pump heaters compare.
Gas Pool Heaters
Gas heaters heat water quickly regardless of outside air temperature, which makes them a good fit for homeowners who want to heat the pool occasionally or quickly before a specific event.
Pros
- Fast heating, even in cool weather
- Performance is not affected by outside temperature
- Lower upfront cost than heat pumps in many cases
Cons
- Highest operating cost of the three options
- Shorter typical lifespan
- Requires a gas line, either natural gas or propane
Heat Pump Pool Heaters
Heat pumps pull warmth from the surrounding air rather than generating heat directly, making them far more efficient for pools that stay heated for extended periods.
Pros
- Much lower operating cost than gas over time
- Longer typical lifespan
- No gas line required
Cons
- Heats more slowly than gas
- Efficiency drops in cooler outside air temperatures
- Higher upfront cost than gas in many cases
Electric Resistance Heaters
Electric resistance heaters work well for smaller pools and spas but become expensive to run on larger bodies of water.
Pros
- Simple installation with no gas line needed
- Works well for smaller pools and spas
Cons
- Higher operating cost for larger pools
- Less common for full-size residential pools
Which One Makes Sense for Your Pool
If you want to heat the pool occasionally and are less concerned with operating cost, gas is often the simplest choice. If you plan to keep your pool heated for extended stretches of the year, a heat pump usually saves significantly on operating costs despite the higher upfront investment. Florida’s mild winters, in particular, make heat pumps a strong fit since outside air rarely gets cold enough to hurt their efficiency much.
When to Call a Professional
The right heater depends on your pool size, how you use it, and your existing equipment setup. Supreme Pool Services handles pool heater repair and installation for all three heater types. If your current heater is not warming the water properly and you are not sure whether to repair or replace it, see our guide on why your pool won’t heat.
What It Costs
Gas heater installation typically runs $1,800–$3,000. Heat pump installation generally runs $2,800–$4,500+, and electric resistance heaters usually run $1,500–$2,800 depending on size. These ranges vary based on your pool’s size and the specific equipment installed. See our pool service cost guide for Palm Beach County for pricing on our other services.
Common Questions
Which heater type is cheapest to run in Florida?
Heat pumps are typically the most cost-effective to operate in Florida’s climate because the mild winters keep them running efficiently most of the year.
Can I switch from a gas heater to a heat pump?
Yes, in most cases, though it may involve some changes to the equipment pad setup and electrical connections. We can evaluate your current setup during an estimate.
Do heat pumps work in cooler weather?
They work, but efficiency drops as outside air gets colder. In Florida, this is rarely a major issue outside of a few cooler weeks each winter.
Get Started
If you are deciding which pool heater is right for your home, Supreme Pool Services can walk you through the options based on how you actually use your pool. We serve Jupiter Farms and the surrounding Palm Beach County area. Call (561) 312-0970 or email supremepoolsandspa@gmail.com to request a free estimate.
